Sentences with phrase «scattering of light from»

Astronomers are able to analyze the composition of the atmosphere of exoplanets like WASP - 19b by observing the scattering of light from the parent star (Credit: ESO / M.

A technique called micro-Raman spectroscopy, which measures the scattering of light from a sample, revealed that the carbon in the ink matched samples of other papyrus documents that date from the first to eighth centuries A.D.

Not exact matches

It appears blue in daylight because it more effectively scatters the shorter wavelengths of the light that mostly originate from old Sol, so that they appear to come from all directions.

O Dayspring from on high, who raised up your servant John Newton to enlighten your people with the message of amazing grace; grant us the courage to work for the freedom of all who live in unjust captivity and slavery and to scatter the darkness of those who live in self - condemnation and fear by the light of the gospel of Jesus Christ our Lord.

Light from the torches and litany of candles scattered about flickers on the water.

Much of that scattered debris ended up even farther out, about a light - year from the sun in a spherical shell of comets called the Oort Cloud.

Enormous clouds of these tiny grains scatter and absorb some of the radiation emitted from the stars — especially visible light — limiting what can be seen by telescopes here on Earth.

The frequency of the shifted light depends on the molecule it scattered from.

«It essentially treats the fabric as a mesh of interwoven microcylinders, which scatter light the same way as hair, but are oriented at 90 degrees from each other,» Sadeghi said.

We can simulate any combination of weaving pattern and thread types,» said Oleg Bisker, who co-authored the paper as part of his master's thesis on measuring and modeling light scattering from threads.

That's because some of the returning light scattered from points on the surface has farther to go and throws the collective wave out of phase.

The research team from the University of Bath's Department of Electronic & Electrical Engineering in collaboration with the European Incoherent Scatter Scientific Association (EISCAT) observed the Northern Lights in Tromsø, northern Norway, where they observed and analysed the Northern Lights simultaneously using radar and a co-located GNSS receiver.

Changing the size of the beads alters how light scattered from nearby beads interferes, enhancing particular shades.

Total levels of nighttime lighting are straightforward to calculate from satellite images — scientists have done this for decades — but determining how much «skyglow» all that light causes as it scatters through Earth's atmosphere is a thornier task.

Rooting around in the detritus on his desk, Robert Winglee finds a quarter - sized magnet and waves it inches from his computer monitor, sending ripples of color scattering as light particles are deflected back toward the screen.

Physicists from the ATLAS experiment at CERN have found the first direct evidence of high energy light - by - light scattering, a very rare process in which two photons — particles of light — interact and change direction.

But Raman spectroscopy suffers from a major drawback — the scattered signal is weak, meaning that light is ordinarily difficult to collect even tens of meters away from a sample.

Although the disk appeared to span less than 100,000 light - years, astronomers had seen sprinkles of other stars scattered far beyond the disk at the same distance from Earth, suggesting that the stars also belonged to the galaxy.

Most light waves, however, are scattered incoherently, that is the wave patterns of the outgoing waves are no longer directly in relation to the incoming waves as the light is reflected from the atoms it touches as fluorescent light.

«The smaller the structures to be imaged, the larger the proportion of incoherently scattered light,» explains the lead author of the study, Raimund Schneider from FAU.

This is useful for finding galaxies because while large clouds of dust will scatter or absorb visible light, they transform light emitted from the galaxies into infrared light.

Researchers from the University of Illinois at Urbana - Champaign have experimentally demonstrated, for the first time, the phenomenon of Brillouin Scattering Induced Transparency (BSIT), which can be used to slow down, speed up, and block light in an optical waveguide.

Scattered light was used to reveal the composition of dangerous powders from up to 1 kilometer away

«Using this new laser, we collect the back - scattered light from not only the cantilever holding the needle, but also the tip of the needle that gives additional measurements.

The interaction of short and strong laser pulses with an atomic Bose - Einstein condensate is found to generate patterns of recoiling atoms that are different from those seen in previous light - scattering experiments.

Designed and developed in partnership with Dr. Frédéric Leblond, Professor in Engineering Physics at Polytechnique Montréal, and co-senior author of the study, the probe technique uses laser technology to measure light scattered from molecules.

These images compare a view of Beta Pictoris in scattered light as seen by the Hubble Space Telescope (top) with a similar view constructed from data in the SMACK simulation (red overlay, bottom).

Satellites can detect volcanic ash by observing the scattering of ultraviolet light from the sun.

«The light elements that makes up these «molecular tadpoles» are easily located by neutrons» says Dr Isabelle Grillo, at the ILL. «Moreover, small angle neutron scattering which we use at the ILL allows to characterise the self - assembled systems from the nanometre scale to tenth of micrometres and is perfectly adapted to observe the coming together of the C60 footballs» into these beautiful core structures.»

Like polarized light (which vibrates in one direction and is produced by the scattering of visible light off the surface of the ocean, for example), the polarized «B - mode» microwaves the scientists discovered were produced when CMB radiation from the early universe scattered off electrons 380,000 years after the Big Bang, when the cosmos cooled enough to allow protons and electrons to combine into atoms.

This is because rays of light reflected from the target at angles too wide to be intersected by normal lenses are bent into a detector by the scattering lens (see diagram).

Metamaterial arrays whose geometry varied gradually from a symmetric bar to an asymmetric U-shape were used to compare the predictive abilities of Miller's rule and a non-linear light scattering theory.

Kevin then used another technique to better constrain the plane of the disk itself: as you can't quite trust scattered light images to determine where the structures (mass) is hidden, he used longer wavelength observations from the ALMA radio interferometer array to figure out how inclined is the disk.

This technology is a nondestructive optical clearing agent offering a high level of transparency that greatly reduces problems with light scattering and enables high resolution images to be captured from biological tissues.

The research by Landes and other experts at Rice University's Smalley - Curl Institute could allow engineers to use standard electrical switching techniques to construct color displays from pairs of nanoparticles that scatter different colors of light.

I will describe how scattered light from the outer disk can match the T Cha datasets, why such a model is unsuitable for LkCa 15, and the characteristics of the LkCa 15 protoplanetary system.

Abstract: We present $ H$ - band scattered light imaging of a bright debris disk around the A0 star HD 36546 obtained from the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system with data recorded by the HiCIAO camera using the vector vortex coronagraph.

We confirm that the dominant source of emission is forward scattered light from the near edge of the outer disk.

The path traversed by light scattering from the specimen undergoes the same level of scrutiny.

In order to extract the signal of a planet in an image, there is a lot of interference I have to take out: the random noise from the camera's own electronics, the scattered light around the coronagraph, and the rotation of the individual exposures.

Cluster stars provide the light, and surrounding clouds of dust reflect and scatter the rays from the stars.

This nebula is a typical example of a reflection nebula - the dust in the nebula scatters light from stars within the nebula and makes the nebula shine with a blue glow.

Our models are compared to a suite of observational data for thermal and scattered light emission, ranging from the ALMA radial surface brightness profile at 1.3 mm to polarisation measurements in the visible.

Whenever light hits an object, some of the light scatters back from the surface of the object.

Low scattered - light capability with coronagraphy and high - resolution spectroscopy enables to visualize neutral atmosphere and plasmas escaping from icy satellites of Jupiter and Saturn as well as Io that has active volcanoes.

This excess emission is likely due to the scattering of stellar light by circumstellar dust and / or the thermal emission from a yet unknown population of hot dust, although hot gas emitting in the continuum can not be firmly excluded.

The outer disk is revealed in reprocessed archival Hubble Space Telescope NICMOS F110W images, as well as new coronagraphic H band images from the Very Large Telescope SPHERE instr... ▽ More We present the first scattered - light images of the debris disk around 49 ceti, a ~ 40 Myr A1 main sequence star at 59 pc, famous for hosting two massive dust belts as well as large quantities of atomic and molecular gas.

Our models are compared to a suite of observational data for thermal and scattered light emission, ranging from th... ▽ More The spatially resolved AU Mic debris disc is among the most famous and best - studied debris discs.

The light from the front edge of the disk is strongly polarized as it scatters towards us.

Reminiscent of driftwood tossed on the beach, the Bermuda Pendant Light Fixture from Varaluz scatters recycled steel pieces around a contrast colored column and bulb sockets.